Heel-nail



(No Model.)

, A. I'. MUNRO 81: W. SQCOLE.

H BEL NAIL.`

Patented Oct. Z9, 1895,

WITIJEEEEE UNITED STATES PATIENT OEEICE.

ALEXANDER F. MUNRO, OF CAMBRIDGE, AND WALDO S. COLE, OF KINGSTON, MASSACHUSETTS.

HEEL-NAIL.

SPECIFICATION forming part of Letters Patent No. 548,811, dated October 29, 1895.

Application led August 10, 1894. Serial No. 519,961. (No model.)

To all whom, it may concern: Y

Beit known that we, ALEXANDER F. MUNRO, of Cambridge, in the county of Middlesex, and WALDO S. COLE, of Kingston, in the county of Plymouth, State of Massachusetts, have invented certain new and useful Improvements in Heel-Nails, of which the following, taken in connection with the accompanying drawings, is a specification.

Our invention relates more particularly to that class of shoe-nails that are used for nailing heels and is adapted for blind-nailing.

The invention consists in the peculiar formation of the nail, which may be best understood by reference to the specification and drawings, the objects being to so form the head that it will rmly secure the top lift and to so form the point that it will readily penetrate and form a broad well-anchored clinch. These objects we attain by the construction shown in the accompanying drawings, in which- Figures 1 and 2 are elevations of the nail complete. Fig. 3 is a cross-section taken on line of Fig. 2. Fig. 4 is a cross-section taken on line y y of Fig. 2. Fig. 5 shows in section a heel and one of our nails. Fig,`6 is a section of a portion of a heel, showing the head and a part of one of our nails.

Our nail complete is shown in Figs. 1 and 2, the head of which is made with a fillet or collar B, formed in the usual manner. Immediately above this llet B the body is nicked in, as shown at b b, Fig. 2. Above the nicks b b the part is flattened, so as to form a comparatively broad dovetail head H, which formation, together with the nicks b b, will constitute a reliable hold for the top lift.

The point of our nail is formed with a comparatively fiat inclined side D P', Figs. 1 and tail form with nicks below the head and a a broad fiat surface is presented to theleather as a bttress and a firm anchorage is secured, the clinched part of the nail being in itself a large cross-section instead of a mere thin easily-bent strip.

A peculiar feature of our nail is that its penetrating end is Wedgeshaped, the point of the wedge being in the central longitudinal plane of the body of the nail, so that the point would have no tendency to turn and clinch were it not that the two sides of the point are dierent, as shown in the drawingsthat is, one side consists of a plain surface, while the other is like the back of a spoon.

Ve claim- 1. As an improved article of manufacture, a nail having a point beveled or inclined on one side and formed with a broad, rounded extremity which terminates in the axis of the nail, and the opposite side of the point rounded or spoon backed, substantially as described.

2. As an improved article of manufacture, a nail having a point beveled or inclined on one side and formed with a broad, rounded extremity which terminates in the axis of the nail, the opposite side of the point being rounded or spoon backed and a head of dovetail form of less thickness than the diameter of thenail and with nicks below the head, substantially as described.

3. As an improved article of manufacture, a nail having a point beveled or inclined on one side and formed with a broad rounded extremity which terminates in' the axis of the nail, the opposite side of the point being rounded or spoon backed and a head of dovecollar below the nicks, substantially as described.

ln testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, on this 9th day of August, A. D. 1894. A

ALEXANDER F. MUNRO. WALDO-S. COLE. Witnesses:

FRANK G. PARKER,

FRANK G. HATCIlIgEJQ 

